Golos

From Tardis Wiki, the free Doctor Who reference

Golos was a planet in the Andromeda Galaxy. (PROSE: Placebo Effect) It was a planet of colourful mists and the home of the Gholos. (AUDIO: Bang-Bang-A-Boom!)

At some point before 3999, it was attacked by the Wirrn. (PROSE: Placebo Effect)